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34001813EN/AE - Page 15
2. Installation
Required cable sizes
Cable sizes are determined for copper conductors (for aluminium conductors, increase the size by 30%). Size
calculations also take into account a voltage of 400 V and grouping of four cables.
UPS power
rating
Minimum sizes for
separate Normal AC
input copper cables
(<100 m)
Minimum sizes for
separate Bypass
AC input copper
cables (<100 m)
Minimum sizes
for common
bypass and
Normal AC input
copper cables
(<100 m)
Minimum sizes
for copper load-
circuit cables
(<100 m)
Battery/terminal
connection
(<15 m)
20 kVA 10 mm
2
16 mm
2
16 mm
2
16 mm
2
16 mm
2
30 kVA 16 mm
2
16 mm
2
16 mm
2
16 mm
2
25 mm
2
40 kVA 16 mm
2
16 mm
2
16 mm
2
16 mm
2
35 mm
2
60 kVA 25 mm
2
25 mm
2
25 mm
2
25 mm
2
70 mm
2
80 kVA 50 mm
2
50 mm
2
50 mm
2
50 mm
2
95 mm
2
100 kVA 50 mm
2
70 mm
2
70 mm
2
70 mm
2
2 x 50 mm
2
120 kVA 70 mm
2
70 mm
2
70 mm
2
70 mm
2
2 x 70 mm
2
Connections are made to pre-drilled terminals.
Hole diameter: 6.5 mm (8.5 mm for 120 kVA).
Earthing cables connect to the earthing plate.
Hole diameter: 6.5 mm (8.5 mm for 120 kVA).